EP 0289213 B1 19920617 - A FLUID PRESSURE CONTROL VALVE AND A SYSTEM WHICH INCLUDES SUCH A VALVE
Title (en)
A FLUID PRESSURE CONTROL VALVE AND A SYSTEM WHICH INCLUDES SUCH A VALVE
Publication
Application
Priority
GB 8710367 A 19870501
Abstract (en)
[origin: EP0289213A2] A fluid pressure control valve and a fluid control system (such as for beverage dispensing) with such a valve has a beverage passage (3), pressure fluctuations in which are detected by a diaphragm (17) to displace a sensing member (15) axially against spring loading (23). Spring (23) reacts on thrust member (22) which is adjustable axially through a cam mechanism (25/26) to vary the biasing force of spring (23). A valve member (20) spring loaded at (21) relative to thrust member (15) normally closes an exhaust port (19) to an air or other gas passage (5) through which gas passes under pressure to be injected into the beverage from passage (3). An increase in beverage pressure in passage (3) displaces sensing member (15) to increase the spring biasing (21) on the closure member (20) and reduce the proportion of air which can escape to atmosphere from passage (5) through exhaust port (19) to provide an increase in air flow into the beverage. A reduction of pressure in passage (3) reduces the spring biasing (21) to permit a greater proportion of air to escape from passage (5) through exhaust port (9) and thereby reduce the proportion of air which is introduced into the beverage. The control valve can include a temperature sensitive unit responsive to temperature of beverage in passage (3) and which reacts to adjust the force of biasing spring (21) independently of pressure in the passage (3). Plunger (51) can be depressed manually to close the exhaust port (19) temporarily and thereby maintain maximum air pressure in the passage (5).
IPC 1-7
IPC 8 full level
B01F 15/04 (2006.01); B67D 1/12 (2006.01); B67D 1/14 (2006.01); F16K 31/365 (2006.01)
CPC (source: EP US)
B67D 1/1252 (2013.01 - EP US); B67D 1/14 (2013.01 - EP US); F16K 17/06 (2013.01 - US); Y10T 137/2514 (2015.04 - EP US); Y10T 137/7737 (2015.04 - EP US); Y10T 137/7905 (2015.04 - EP); Y10T 137/7906 (2015.04 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0289213 A2 19881102; EP 0289213 A3 19891213; EP 0289213 B1 19920617; AT E77458 T1 19920715; AU 1531088 A 19881103; AU 611430 B2 19910613; CA 1293171 C 19911217; DE 3872045 D1 19920723; DE 3872045 T2 19930211; ES 2032960 T3 19930301; GB 2204382 A 19881109; GB 8710367 D0 19870603; GR 3005340 T3 19930524; IE 62635 B1 19950222; IE 881306 L 19881101; JP S6422335 A 19890125; MY 101790 A 19920117; NZ 224349 A 19890927; US 4818444 A 19890404
DOCDB simple family (application)
EP 88303595 A 19880421; AT 88303595 T 19880421; AU 1531088 A 19880429; CA 565470 A 19880429; DE 3872045 T 19880421; ES 88303595 T 19880421; GB 8710367 A 19870501; GR 920401678 T 19920804; IE 130688 A 19880429; JP 10739988 A 19880429; MY PI19880454 A 19880429; NZ 22434988 A 19880422; US 18727388 A 19880428